KR101620393B1 - Kiln apparatus for firing electriceramic products be capable of improving productivity and yields - Google Patents

Abstract

The present invention relates to a charging and discharging apparatus for a roller conveyor type firing furnace for firing a ceramic electronic component including a ceramic capacitor (MLCC), in which a plurality of stages And a moving carriage 20 having slots S formed in two or four racks R1 to R3 divided into left and right slots so that slots S are vertically arranged. A bogie position fixing unit 24 for fixing the moving bogie 20 to a position capable of preventing rotation is disposed near the charging unit 4 and the discharging unit 8 of the firing furnace 2, A multistage conveying roll type runway 34 and a runway 36 which are straightly extended at the entrance and exit of the runway 6 and bent at a right angle in the extending direction of the runway 34 and the runway 36, A horizontal transfer table 32 of a chain conveyor system extending to the position fixing unit 24, And the left and right movement ball screws 42 and the upward and downward ball screws 44 are used to perform the forward and backward movement and the leftward and rightward movement and the elevation movement to move the movable carriage 20 in the multi- The arrangement space limitations of the firing furnace facility are solved by providing the stocker (30) which floats the segregation (10) by the conveyor (46) and transfers the chain conveyor type horizontal conveyor (32).

Description

TECHNICAL FIELD [0001] The present invention relates to a ceramic electronic component firing furnace,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic electronic component baking furnace, and more particularly, to an electronic component baking furnace device capable of minimizing the installation space limitation of a ceramic electronic component such as a multilayer ceramic capacitor (MLCC) .

Generally, a ceramic electronic component such as a multilayer ceramic capacitor (MLCC) is required to be subjected to a baking process using a baking furnace as one of the procedures for obtaining the finished product.

The firing of the ceramic electronic component in the firing furnace is carried out in various atmospheres such as an atmospheric atmosphere, an oxygen gas atmosphere, an oxygen partial pressure adjusted atmosphere, and a carbon dioxide gas atmosphere depending on the kind and property of the product, For several tens of minutes to several tens of hours. The material to be calcined may be a battery material in the case of a secondary battery and a ceramic catalyst in the case of a ceramic capacitor (MLCC).

There are various kinds of firing furnaces for firing, and these days, high-quality firing through high-precision temperature control, short-time firing, energy saving, excellent response in response to firing conditions requiring special atmosphere, And a sintering furnace with an excellent productivity is required, and a sintering furnace corresponding to the sintering furnace is used.

Electronic parts such as ceramic capacitors (MLCC) are finely cut in a chip state. Such chip-shaped molded articles are to be supplied to the firing furnace in a side-by-side manner so as not to be stacked on each other due to their characteristics.

A conveyor is used as an example of the prior art in putting an electronic component material in the form of a chip to be fired into the firing furnace and discharging the fired electronic component material in the firing furnace.

However, such a conveyor type for the injection of the molding to be fired and the firing of the finished parts of the firing furnace takes up a lot of space, and therefore, the installation space is limited.

Patent Registration No. 10-0971119 entitled "Material Alignment System"

It is therefore an object of the present invention to provide a ceramic electronic component firing furnace input and output device capable of minimizing the installation space limitation of a firing furnace in firing ceramic electronic components such as a multilayer ceramic capacitor (MLCC) in a firing furnace .

According to the present invention, there is provided a charging and discharging apparatus for a roller conveyor type firing furnace for firing a ceramic electronic component including a ceramic capacitor (MLCC), comprising: a plurality of stages (10) (20) having slots (S) in which the slots (S) can be inserted in two or four racks (R1 to R3)

A bogie position fixing unit 24 for fixing the moving bogie 20 carried by the worker 22 in a rotatable manner is disposed near the charging unit 4 and the discharging unit 8 of the firing furnace 2 ,

A multistage conveying roll type access road 34 and an access road 36 extending in a straight line to the entrance and exit of the furnace tunnel 6 of the firing furnace 2 and the extending direction 36 of the access road 34 and the advancing road 36 And a chain conveyor type horizontal conveying belt 32 extending to the conveying position fixing unit 24 at the same time,

And the left and right moving ball screws 42 and the elevating ball screws 44 so as to move up and down and move up and down to move the moving carriage 20 to the multi- And a stocker (30) for transferring the sorted consignments (10) to the conveying platform (46) and transferring the conveyed consignment (10) to the horizontal conveying platform (32).

At this time, the chain conveyor 60 of the horizontal transfer table 32 is constituted by a pair of chains 60a and 60b having a top plate 70 for stably supporting the cages 10, and arranged horizontally The transfer rolls 68, which rotate horizontally so as to convey the articles in a direction perpendicular to the conveying direction of the conveying member 32, are provided at the beginning and the end of the conveying table 32 in the downward direction between the chains 60a and 60b The lifters 64 and 66 are lifted and raised in the space to align the transport height of the transporting belt 46 of the stocker 30 and the transporting height of the charging unit 4 and the discharging unit 8 of the firing furnace 2. [ And FIG.

In the present invention, the pallet 46 is provided with a plurality of drive rolls 48 for transporting the set 10 placed on the pallet 32,

In addition, a position correcting operation pin 72 is provided on the chain conveyor 60 at an inlet port through which the conveyed object flows into the horizontal transfer table 32, so that the cages 10 can be properly placed on the chain conveyor 60.

In the present invention, the bogie position fixing unit 24 includes four lifting cylinders 26 for lifting the movable bogie 20 in a balanced manner, a clamp member (not shown) for supporting and clamping the bottom of the movable bogie 20 29).

The present invention can be applied to a sintering furnace in which a sintered refractory sagger having a mesh netting structure containing a fired ceramic electronic component molding is stacked in a multi-stage stacking manner, And a discharge unit, and a stoker capable of moving up and down, moving forward and backward and left and right, a chain conveyor type horizontal conveyor, lift, etc., is used to reduce the installation space of the firing furnace, Space constraints can be solved.

1 is a schematic plan view of a roller conveyor type firing furnace for firing ceramic electronic components according to an embodiment of the present invention;
2 is a schematic side view of a roller conveyor type firing furnace for firing ceramic electronic components according to an embodiment of the present invention;
FIG. 3 is an enlarged plan view of a charging section of the calcining furnace of the present invention,
Fig. 4 is a side view of a moving bogie and bogie position fixing unit for carrying a molded ceramic electronic component according to the present invention; Fig.
5 is a front view showing a moving truck fixed to the truck position fixing unit,
FIG. 5A is a plan perspective view and a side view of the bank holding fixture unit. FIG.
FIG. 6 is a sag composition view of a network image tape structure for multi-layer stacking of a ceramic electronic component molded article according to an embodiment of the present invention;
7 is a side view of a stoker according to the present invention,
8 is a front view of the stocker according to the present invention,
Fig. 9 is a perspective view of a chain unit of a chain conveyor constituting a horizontal conveying belt according to the present invention; Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic plan view of a roller conveyor type baking furnace for baking a ceramic electronic component according to an embodiment of the present invention. FIG. 2 is a schematic view of a roller conveyor type baking furnace for baking a ceramic electronic component according to an embodiment of the present invention. Fig.

As shown in FIGS. 1 and 2, the firing furnace 2 of the present invention for firing ceramic electronic components such as a multilayer ceramic capacitor (MLCC) is a roller conveyor type such as a roller hearth kiln. Adopt a firing furnace.

The roller conveyor type firing furnace 2 has a charging portion 4 for charging a ceramic electronic component molded article and a discharging portion 8 for discharging the fired ceramic electronic component molding. And a rotor passage (6) is provided between the discharge portions (8). The Rocha tunnel furnace 6 is a refractory material tunnel structure having three regions of a preheating portion, a firing portion and a cooling portion. Hundreds and thousands of rollers are installed on the furnace in the width direction so as to be able to rotate closely . In addition, a high temperature of several hundreds to several thousands of degrees Celsius must be maintained inside the Roberts tunnel 6 of the firing furnace 2, and a large number of burners are arrayed for this purpose.

The furnace tunnel portion 6 of the firing furnace 2 is formed in the form of a module made of a refractory material and a light insulating material or a ceramic fiber. The modules are connected to each other by several to several tens of firing furnaces, do.

In the present invention, the installation space of the firing furnace 2 can be reduced by reducing the installation space of the charging unit 4 and the discharge unit 8, thereby realizing the installation space restriction of the firing furnace facility.

1, the charging section 4 of the firing furnace 2 of the present invention is constituted by a moving carriage 20, a stocker 30, a horizontal transfer table 32 of a chain conveyor type, and an access road 34, The discharge portion 8 of the firing furnace 2 of the present invention is constituted by the advance path 36, the horizontal transfer table 32 of the chain conveyor type, the stocker 30, and the moving carriage 20.

3 is an enlarged plan view of the charging section 4 of the calcining furnace 2 according to the present invention and the discharging section 8 of the calcining furnace 8 is provided with the corresponding components of the charging section 4 shown in Fig. It is the same, but its direction is opposite. The access road 34 of the charging unit 4 in FIG. 1 corresponds to the discharge passage 36 of the discharging unit 8.

Referring to FIG. 3, an implementation for minimizing the installation space of the firing furnace facility according to the present invention will be described in detail.

In the present invention, in order to minimize the firing furnace facility, a moving truck 20 is provided which can be carried by an operator and does not require a small space charge, instead of a conveyor type input unit and a discharge unit. And a bogie position fixing unit 24 for allowing the moving bogie 20 to be stably fixed in position.

A plurality of cages 10 are mounted on the moving carriage 20 for holding the ceramic electronic component molding 14 to be sintered or finished.

FIG. 6 is a configuration diagram of a cage 10 having a network image tape structure for multi-stage stacking of a ceramic electronic component formed article 14 according to an embodiment of the present invention. The sagger 10 containing the sludge 14 is loaded on the moving truck 20 to be fed into the sintering furnace 2.

A sagger (also referred to as a setter) 10 is a container for holding a molded ceramic electronic component such as a ceramic capacitor, which is an object to be cleaned, and is in the form of a refractory plate. In order to improve the productivity of the ceramic electronic component, And a sagger 10 of a multi-layer laminated net-like tape-like structure as shown in FIG.

The cage 10 of the present invention is provided with a plurality of windows by the structure of the planar lattice-shaped skeletal frame 11 in order to improve the air permeability and to maintain the uniform heat distribution or uniform heat, The netting 12 is formed in a plurality of windows so that the ceramic electronic component molding 14 is placed thereon, thereby forming a mesh-netting structure.

In order to increase the productivity of ceramic electronic components, the present invention is characterized in that a plurality of cages 10 having a mesh netting structure for holding a ceramic electronic component molded article 14 are stacked in multiple layers, Respectively, at the four corners of the base plate 10a.

The sagger 10 is made of a heat-resistant material having excellent heat resistance, corrosion resistance and thermal shock resistance because it is exposed to a severe thermal environment. Although the sagger 10 is stacked in multiple stages according to the present invention, And the net 12 of the window constituting the lattice type skeleton portion 11 can provide vertical and horizontal air permeability as well as uniform heat distribution.

On the other hand, the cages 10 for accommodating the ceramic electronic component molded articles 14 are stacked in three to four stages per one slot (S in FIGS. 4 and 5) of the moving carriage 20, A number of sages 10 are mounted.

Fig. 4 shows a lateral configuration of a moving bogie 20 and a bogie position fixing unit 24 for carrying a molded ceramic electronic component part according to the present invention. In Fig. 5, And shows a frontal configuration showing a mobile carriage 20 that is rotationally prevented and fixed in position according to the invention. 5A is a plan perspective view and a side view of the fixed bed attachment unit 24.

4 to 5 and FIG. 5A, the moving carriage 20 according to the present invention includes a number of slots S capable of being inserted in a stacked state in which the cages 10 containing the ceramic electronic part molding 14 are stacked in a multi- And the slots S are arranged vertically in two to four racks (R1 to R3), which are divided into right and left sides.

The operator 22 inserts the stages 3 to 4 of the cages 10 containing the ceramic electronic part forming material 14 into the slots S of the racks R1 to R3 of the moving carriage 20, All of the segregators 10 are accommodated. Thereafter, the worker 22 moves to the bogie position fixing unit 24 located near the charging portion 4 of the firing furnace 2.

The bogie position fixing unit 24 is a means for fixing the movable bogie 20 carried by the worker 22 in a rotatable manner and includes four lift cylinders 26 for lifting the movable bogie 20 in a balanced manner, And a clamp member 29 for receiving and clamping the bottom portion of the moving carriage 20.

When the worker 22 places the moving carriage 20 in the carriage position fixing unit 24, the sensor 22 senses the movement and the clamp member 29 clamps the bottom portion of the moving carriage 20, The balancing support of the lifting cylinder 20 and the lifting cylinder of the four lifting cylinders 26 are extended to prevent the rotation of the lifting cylinder 20 so that the wheels of the lifting truck 20 float away from the floor.

When the moving carriage 20 is fixed to the truck position fixing unit 24 so as to prevent rotation, a stoker 30 according to the present invention located in the vicinity of the moving carriage 20 is stacked on the moving carriage 20 10 to a horizontal transfer bar 32 of the chain conveyor type as shown in FIGS. 1 and 3.

1, there is a multi-stage conveying roll type runway 34 extending straightly at the inlet of the furnace tunnel 6 of the firing furnace 2, and an outlet 34 of the furnace tunnel 6 of the firing furnace 2 There is an advancing path 36 of a multi-stage conveying roll system which is linearly extended.

The entrance road 34 and the advance road 36 are driven by closely arranging the conveying rolls 38. The entry and exit roads 34 and 36 are provided with entrance and exit paths 34 and 36 A horizontal transfer belt 32 of a chain conveyor type extending in a direction perpendicular to the extending direction is provided. The other end of the horizontal transfer table 32 adjacent to the entrance road 34 or the exit path 36 and the other end of the horizontal transfer table 32 is provided with a stocker 30 for carrying the horizontal transfer sheet 32 or the horizontal transfer table 32 do.

FIG. 7 is a side structural view of a stoker 30 according to the present invention, and FIG. 8 is a front structural view of a stocker 30 according to the present invention. 3 shows a plan structure of the stocker 30 according to the present invention in addition to the access road 34 and the advancing path 36, the moving truck 20 and the horizontal moving table 32. As shown in FIG.

3, 7 and 8, the stocker 30 according to the embodiment of the present invention is configured to lift and transfer the multi-stacked sediments 10 in each slot S of the moving truck 20 A ballscrew 40 for forward and backward movement connected to the motor 40a for forward and rearward movement, a ballscrew 42 for moving left and right connected to the left and right movement motor 42a and a lifting motor 44a And a lifting ball screw 44 connected thereto.

The first conveying body 52 which can be moved to the right and left is mounted on the base table 50 fixed to the floor and the second conveying body 54 capable of moving up and down is mounted on the first conveying body 52. [ And the second conveying body 54 is loaded with a carrier 46 capable of moving forward and backward.

More specifically, the left and right moving ball screws 42 and the LM guide 43 for moving the first conveying member 52 left and right and the LM guide 43 are provided on the base table 50. The first conveying body 52 is provided with an elevating ball screw 44 for elevating and lowering the second conveying body 54 on which the conveying belt 46 is located. 46 for forward and backward movement of the ball screw 40 are provided.

The pallet 46 has a size such that it can be inserted into any slot S of any racks R1 to R3 of the mobile truck 20. The pallets 46 are inserted into any slot S to form multi- You can draw it out. This conveyor 46 also has a plurality of drive rolls 48 for conveying the multi-stage stack 10 placed on the conveyor 46 to the horizontal take-

In Figs. 3, 7 and 8, reference numerals 56a, 56b, and 56c, which are not described, are cable chains.

In order to operate the stocker 30 of the present invention, in order to position the pallet 46 in one of three right and left racks R1 to R3, the ball screw for left and right movement 42 is driven, The conveying body 52 is moved to the left and right and thereafter the elevating ball screw 44 is moved in order to position the pallet 46 in a selected one of a plurality of slots S in the selected racks R1 to R3 So that the second conveying member 54 is moved up or down.

The ball screws 40 for forward and backward movement are then driven to bring the pallet 46 to the multi-stage stack 10 sandwiched between the selected racks R1 to R3 and the selected slots S, The elevating ball screw 44 slightly advances to withdraw the cage 10 in a state in which the pallet 46 in which the pallet 46 inserted in the slot S is advanced and the cage 10 having the multi- After the operation, the ball screw 44 for forward and backward movement is operated to retract the cage 10 placed on the pallet 46 from the moving carriage 20.

The side of the pallet 46 on which the ballscrew 44 for forward and backward movement is positioned in a fully retracted position is positioned at the top of the horizontal barrel 32 as shown in FIG.

A drive roll 48 is provided at the bottom of the pallet 46 supporting the multistage stack 10 of pallets 46 to allow the pallet 10 to be moved horizontally to the top of the pallet 32 The driving roll 48 is rotated. So that the cage 10 is transferred from the pallet 46 to the conveying platform 32.

Referring back to FIG. 3, referring to the horizontal transfer table 32 of the chain conveyor type according to the present invention, the horizontal transfer table 32 transfers the transported goods by the chain conveyor system, And extends at right angles to the advancing direction of the sag 10 along with the rotation of the driving roll 48 of the pallet 46. [

The horizontal transfer table 32 according to the present invention has a chain conveyor 60 for operating in a chain conveyor manner. The chain conveyor 60 has a pair of chains 60a and 60b arranged parallel to each other as shown in Fig. 3, and the chain units of the chains 60a and 60b, as shown in Fig. 9, 10 to be stably supported.

In addition, the horizontal transfer table 32 is provided with a lift 64 (hereinafter referred to as " horizontal transfer table ") 64 carrying transfer rolls 68 which are rotated at the initial and tail portions of the transfer table 32 so as to transfer the articles in a horizontal direction, 66). The lifts 64 and 66 are lowered during the conveyance of the conveyed products so that the conveying rolls 68 mounted on the lifts 64 and 66 are moved downwardly between the chains 60a and 60b of the chain conveyor 60 The conveying rolls 68 mounted on the lifts 64 and 66 pass between the chains 60a and 60b of the chain conveyor 60 So that the transporting height between the transporting belt 46 of the stocker 30 and the charging unit 4 of the firing furnace 2 and the transporting height of the discharging unit 8 are aligned.

A position correcting operation pin 72 is provided on the chain conveyor 60 to allow the cages 10 to be properly mounted on the inlet port into which the transported material is introduced into the horizontal transfer table 32.

Therefore, before the cage 10 stacked in layers by the rotation of the driving roll 48 of the pallet 46 is moved to the initial position of the horizontal movement table 32, the horizontal movement of the lifter 32 The feed rollers 68 of the lifts 64 immersed in the lower space between the chains 60a and 60b of the chain conveyor 60 are floated to relatively move the chains 60a and 60b relative to the chains 60a and 60b The height of the pallet 46 is aligned with the height of the pallet 46 so that the pallet 10 can be lifted up high and the pallet 30 can be smoothly moved to the pallet 32.

So that the multi-stage stack 10 placed on the pallet 46 is transferred from the pallet 46 to the transfer roll 68 of the lift 64 at the top of the pallet 32.

Thereafter, in the state where the feed roll 68 of the lift 64 is stopped, the position correcting operation plunger 72 provided in the inlet for introducing the transported material into the horizontal transfer table 32 is moved on the transfer roll 58 Slightly pushing the cage 10 to help the cage 10 climb onto the chain conveyor 60 properly.

Thereafter, the transfer rolls 68 of the lifts 64 are lowered again, so that the settles 10 are transferred over the chains 60a and 60b.

The chain conveyor 60 of the horizontal transfer table 32 is then operated to cause the vertical transfer of the cage 10 toward the end of the horizontal transfer table 32. When the sagger 10 completes the horizontal transfer to the tail end of the horizontal transfer table 32, the transfer roll 68 of the lift 66 at the tail end floats up between the chains 60a and 60b, The cage 10 at the end of the carriage 32 is transferred to the transfer roll 68 of the lift 66. [

Thereafter, the transfer roll 68 of the lift 66 located at the tail end is driven to transfer the cage 10 placed on the transfer roll 68 to the access road (34 in Fig. 1) of the firing furnace 2. At this time, the height of the conveying roll 36 of the entrance road 34 and the height of the conveying roll 68 of the lift 66 are higher than the height of the chain conveyor 60 of the conveying platform 32, and at the same time, . Therefore, the conveyance, that is, the settler 10 can be conveyed from the end of the casting table 32 to the access road 34 of the firing furnace 2 without being disturbed by the chains 60a and 60b of the chain conveyor 60 . The multi-stage stack 10 is put into the furnace tunnel furnace 6 of the firing furnace 2 through the entryway 34 of the firing furnace 2.

As described above, in the present invention, the installation space of the firing furnace 2 can be minimized by reducing the space for installing the charging part 4 and the discharge part 8 of the firing furnace 2.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of claims and equivalents thereof.

The present invention can be used to optimize the facility space in firing ceramic capacitor moldings in a firing furnace.

(2) - firing furnace (4) - input part
(6) to Rochester tunnel (8) - discharge section
(10) - a sagger (10a)
(11) - lattice-shaped skeleton part (12)
(14) - Molded ceramic electronic component parts (20) - Moving truck
(22) - operator (24) - truck position fixing unit
(26) - lifting cylinder (28) - lifting guide rod
(29) - clamp member (30) - stoker
(32) - horizontal slings (34) - ramps
(36) - advance path (38) - feed roll
(40) - a ball screw (40a) for forward and backward movement - a motor
(42) - a ball screw for left and right movement (42a) - a motor for left and right movement
(44) - a lift ball screw (44a) - a lift motor
(46) - carrier (48) - drive roll
(50) - a base (52) - a first conveying member
(54) - the second conveying member (56a) (56b) (56c) - the cable chain
(60) - chain conveyor (60a) (60b) - chain
(64) (66) - Lifter (68) - Feed roll
(70) - Top plate (72) - Actuating rod for position calibration
(72a) - driving cylinder

Claims (5)

delete A charging and discharging apparatus for a roller conveyor type firing furnace for firing a ceramic electronic component including a ceramic capacitor (MLCC)
The slots S are arranged vertically in two to four racks R1 to R3 which are divided into right and left sides having slots S capable of being stacked in a stacked state of the cages 10 containing ceramic electronic components And a movable carriage (20)
A bogie position fixing unit 24 for fixing the moving bogie 20 carried by the worker 22 in a rotatable manner is disposed near the charging unit 4 and the discharging unit 8 of the firing furnace 2 ,
A multistage conveying roll type access road 34 and an access road 36 extending in a straight line to the entrance and exit of the furnace tunnel 6 of the firing furnace 2 and the extending direction 36 of the access road 34 and the advancing road 36 And a horizontal transfer table 32 of a chain conveyor system extending to the vicinity of the truck position fixing unit 24,
And the left and right moving ball screws 42 and the elevating ball screws 44 so as to move up and down and move up and down to move the moving carriage 20 to the multi- And a stocker (30) for transferring the consigned consignments (10) to a conveyor (46) and transferring the conveyor to a horizontal conveying platform (32)
The chain conveyor 60 of the horizontal transfer table 32 is composed of a pair of chains 60a and 60b having a top plate 70 for stably supporting the sages 10 and arranged in parallel with each other, At the beginning and end of the feeding table 32, there are provided lifts 64 and 66 carrying feed rolls 68, which are rotated so as to feed the articles in a horizontal direction perpendicular to the conveying direction of the feeding table 32 The transport rolls 68 mounted on the lifts 64 and 66 are immersed in the lower space between the chains 60a and 60b by the lowering operation of the lifts 64 and 66 During the conveyance of the conveyed object, the lifting action of the lifts 64 and 66 lifts up the conveyance belt 46 to the conveyance platform 46 of the stocker 30 and the conveying path of the firing furnace 2, And the height and the height of the ceramic electronic component are aligned.
The apparatus as claimed in claim 2, wherein the pallet (46) is provided with a plurality of drive rolls (48) for transporting the settles (10) placed on the pallet (32).
3. The apparatus according to claim 2, characterized in that an inlet for introducing the conveyed matter into the horizontal transfer table (32) is provided with a position correcting operation plunger (72) for correctly placing the cages (10) on the chain conveyor A ceramic electronic component burning furnace.
4. The braking system according to claim 2, wherein the bogie position fixing unit (24) comprises four lifting cylinders (26) for lifting the movable bogie (20) in a balanced manner, a clamping member (29). The ceramic electronic component burning furnace according to claim 1,

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